Potential move (Nairobi)

An opportunity has arisen for a move to Nairobi. As I have never been to East Africa, let alone Kenya, I have no idea what it is like there. Thus I post this general querie to anyone who would like to gove me a brief overview of life in Nairobi. What is the expat scene like? How about social life? I come as a single male (except my 5 puppies!) and was wondering if anyone could shed some light on this for me? Worth considering?Thanks in advance. Jean-Paul